5:1 CUBE™ Unun – Model CU-5-1500 (50:250 Ohm, 1.8-61 MHz, 1.5KW PEP)
Application. For traveling wave, end fed or portable 20-31 foot vertical antennas the 5:1 unun makes a good transformer for converting 50 ohm coax to a 250 ohm feed point. If you use the antenna on multiple bands, the feed point impedance may not always be 250 ohms and use of the unun at high (>350 ohms) or low (<100 ohms) will require reduced power input or the unun may have its power ratings exceeded and damage to the unun may occur. The (5:1 conversion ratio will change for loads other than 250 ohms unbalanced.
Typical application:
Also available as a balanced output – CB-5-1500
Ferrite Sampler Pack, Mix 31, RFI Range 1-300 MHz - 25 filters- 1.4" ID Ring, Snap on 1/4, 3/8, 1/2, 3/4, 1, Slip On 1/2, 1/4Product DetailsBrand: Palomar EngneersUPC: Does not applyMPN: FSCP-31Type: NEWCountry/Region of Manufacture: United StatesThe Ferrite Snap On, Ring and slip on sampler Pack is a convenient solution for
troubleshooting RFI/EMI with various diameter cables ranging from 1/4″
to 1.4″ for use as either single turn or multiple turn ferrite chokes using ferrite rings, slip on beads and snap on beads.
The filters are useful for RF coax, AC/DC power cables, and device interconnection cables.
Always use a snap on or ring with a larger inside diameter than the diameter of the cable and use multiple turns if possible (2 turns through the snap on is the same as 4 snap ons with 1 turn). Included in these combo packs are our most popular snap on sizes as follows:
Combo Pack includes the following:
F240-31 ring – 1.4 inch ID – 2 pieces
FSB31-1/4 – 1/4 inch ID – 4 pieces
FSB31-3/8 – 3/8 inch ID – 4 pieces
FSB31-1/2 – ½ inch ID – 4 pieces
FSB31-3/4 – 3/4 inch ID – 2 pieces
FSB31-1 – 1 inch ID – 1 pieces
FB102-31 - 1/2 inch ID slip on bead - 4 pieces
FB56-31 - 1/4" ID slip on bead - 4 pieces inch
Normal Retail price is $127 for these parts
The Ferrite Snap On, Ring and slip on sampler Pack is a convenient solution for
troubleshooting RFI/EMI with various diameter cables ranging from 1/4″
to 1.4″ for use as either single turn or multiple turn ferrite chokes using ferrite rings, slip on beads and snap on beads.
The filters are useful for RF coax, AC/DC power cables, and device interconnection cables.
Always use a snap on or ring with a larger inside diameter than the diameter of the cable and use multiple turns if possible (2 turns through the snap on is the same as 4 snap ons with 1 turn). Included in these combo packs are our most popular snap on sizes as follows:
Combo Pack includes the following:
F240-31 ring – 1.4 inch ID – 2 pieces
FSB31-1/4 – 1/4 inch ID – 4 pieces
FSB31-3/8 – 3/8 inch ID – 4 pieces
FSB31-1/2 – ½ inch ID – 4 pieces
FSB31-3/4 – 3/4 inch ID – 2 pieces
FSB31-1 – 1 inch ID – 1 pieces
FB102-31 - 1/2 inch ID slip on bead - 4 pieces
FB56-31 - 1/4" ID slip on bead - 4 pieces inch
Normal Retail price is $127 for these parts
